CIDESCO EXAM LATEST 2025 WITH CORRECT QUESTIONS AND DETAILED ANSWERS/ALREADY GRADED A+

CIDESCO EXAM LATEST 2025 WITH CORRECT QUESTIONS
AND DETAILED ANSWERS/ALREADY GRADED A+




Matter is everything that: - CORRECT ANSWER-occupies space and has weight



The three forms of matter are solids, liquids and: - CORRECT ANSWER-gases



What property does all matter have? - CORRECT ANSWER-All matter has weight



Condensation is the change of matter from: - CORRECT ANSWER-a gas to a
liquid



Vapourisation is the change of matter from: - CORRECT ANSWER-liquid to a gas



Melting is the change of matter from: - CORRECT ANSWER-a solid to a liquid



Sublimation is the change of matter from: - CORRECT ANSWER-a solid to a gas

,Condensation is: - CORRECT ANSWER-the change of a vapour to a liquid



The alteration of the properties of matter without the formation of any new
substance is called a/an: - CORRECT ANSWER-physical change



The immediate change of a solid into a vapour is called: - CORRECT ANSWER-
sublimation



An example of a single-celled cellular organism is: - CORRECT ANSWER-a
bacterium



I. A micro-organism is the smallest part of the human body. II All micro-organisms
need nutrients for their existence. - CORRECT ANSWER-I is incorrect and II is
correct

I Biological and non-biological substances both need oxygen for their existence. II
The human body consists only of biological substances. - CORRECT ANSWER-I is
correct and II is incorrect



Characteristics of life include: - CORRECT ANSWER-growth and metabolism



Examples of synthetic substances are: - CORRECT ANSWER-plastics and silicones



Examples of organic biological substances are: - CORRECT ANSWER-
carbohydrates and fats

,Examples of mineral substances are: - CORRECT ANSWER-paraffins and
petroleum

Examples of bacteria are: - CORRECT ANSWER-bacilli and cocci



I. Every living organism needs some non-biological substances for it's existence. II.
All non-biological substances are found as minerals in the earth. - CORRECT
ANSWER-I is correct and II is incorrect



Science deals mainly with: - CORRECT ANSWER-physics and chemistry



The study of the structure of the body is called: - CORRECT ANSWER-anatomy



The study of the functions of living organisms is: - CORRECT ANSWER-
physiology



I Anatomy is a very important science in the field of biology. II Anatomy is the
science which deals with the functions of the human body. - CORRECT ANSWER-
I is correct and II is incorrect



I Physiology is a very important science in the field of biology. II Physiology is the
science which deals with the functions of the body. - CORRECT ANSWER-I and II
are both correct

, Which one of the following belongs to the science of chemistry? - CORRECT
ANSWER-The alteration of the structure of molecules



I Chemical reactions only take place outside and not inside a living organism. II
The structure of molecules change during chemical reactions. - CORRECT
ANSWER-I is incorrect and II is correct



The field of physics includes: - CORRECT ANSWER-heat and electricity



Which one of the following belongs to the field of physics? - CORRECT ANSWER-
Sound, electricity and heat



The field of physics includes: - CORRECT ANSWER-the science of electricity



An anion is: - CORRECT ANSWER-A negatively charged atom



An anion is: - CORRECT ANSWER-a negatively charged chloride atom (CI-)



A cation is: - CORRECT ANSWER-A positively charged sodium atom (Na+)



An electrolyte is: - CORRECT ANSWER-A substance which, dissolved in water,
splits into ions